Chromel / Alumel Type K Thermocouple Bare Wire For Industrial Temperature Measurement
Type K Thermocouple (Chromel/Alumel) Bare Wire for Industrial Temperature Measurement
Type K Thermocouple ( Chromel/Alumel)
Type K thermocouples usually work in most applications as they are nickel based and exhibit good corrosion resistance. It is the most common sensor calibration type providing the widest operating temperature range. Due to its reliability and accuracy the Type K thermocouple is used extensively at temperatures up to 2300°F (1260°C).
The simplest thermocouple is made using a bare wire configuration, that is two thermoelements joined at one end and directly exposed to the atmosphere of the operating environment.
Thermocouple alloy wire(high temperature level) types , this type of thermocouple wire is mainly suitable
for thermocouple type K, J, E, T, N and L and other high temperature detection instrument, temperature sensor, etc.
Tankii Thermocouple wire allows temperatures to be measured electronically.
A typical thermocouple construction consists of a pair of dissimilar metals that are electrically joined together at the sensing point and connected to a voltage measuring instrument at the other end.
When one junction is hotter than the other, a thermal "electromotive" force (in millivolts) is produced that is roughly proportional to the difference in temperature between the hot and cold junctions.
Tankii NiCr-NiSi (Type K) thermocouple wire finds the widest use in all basemetal thermocouple, at temperature above 500 °C.
Tankii Type K thermocouple wire has strong resistance to oxidation than other base metal thermocouples.
It has high EMF against Platinum 67, excellent temperature accuracy, sensitivity and stability, with a low cost.
It is recommended for oxidizing or inert atmospheres, but cannot be used directly in the following cases:
(1) Alternatively oxidizing and reducing atmosphere.
(2) Atmosphere with sulphur gases.
(3) Long time in vacuum.
(4) Low oxidizing atmosphere such as hydrogen and carbon monoxide atmosphere.
Detailed Parameter
|
Chemical Composition for thermocouple wire
|
|||||
Conductor Name |
Polarity |
Code |
Nominal Chemical Composition /% |
||
Ni |
Cr |
Si |
|||
Ni-Cr |
Positive |
KP |
90 |
10 |
-- |
Ni- Si |
Negative |
KN |
97 |
-- |
3 |
|
Working Temperature
of thermocouple wire |
||
| Diameter/mm | Long time Working temperature /ºC |
Short period Working temperature /ºC |
0.3 |
700 |
800 |
0.5 |
800 |
900 |
0.8,1.0 |
900 |
1000 |
1.2,1.6 |
1000 |
1100 |
2.0,2.5 |
1100 |
1200 |
3.2 |
1200 |
1300 |
Application of thermocouple wire:
1. Heating - Gas burners for ovens
2. Cooling - Freezers
3. Engine protection - Temperatures and surface temperatures
4. High temperature control - Iron casting
Product packing details:
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